Integrated: 8364504: [BACKOUT] JDK-8364176 Serial: Group all class unloading logic at the end of marking phase

[Albert Mingkun Yang]

On Fri, 1 Aug 2025 05:56:02 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> A clean revert of  "JDK-8364176 Serial: Group all class unloading logic at the end of marking phase".
> 
> Test: Used `jdk/jfr/event/gc/stacktrace/TestMetaspaceSerialGCAllocationPendingStackTrace.java` to verify that it fails before the revert and passes after the revert.

Thank you for the quick review. Merging now to reduce CI noise.

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PR Comment: https://git.openjdk.org/jdk/pull/26587#issuecomment-3142507671